Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fa0e64659b90ea110fdd4ba3b767d4799a685903f8146a46a18b5211c3485aa' 
  AND token = 'G9Hv7TtXZWvsqNatTpr9PpgBGhEFfOVulKtgKgrKDy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}